1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2011-2013 Pali Rohár <pali@kernel.org>
14 #include <linux/delay.h>
15 #include <linux/string.h>
17 /* maximum bootmenu entries */
20 /* maximal size of bootmenu env
21 * 9 = strlen("bootmenu_")
22 * 2 = strlen(MAX_COUNT)
25 #define MAX_ENV_SIZE (9 + 2 + 1)
27 struct bootmenu_entry {
28 unsigned short int num; /* unique number 0 .. MAX_COUNT */
29 char key[3]; /* key identifier of number */
30 char *title; /* title of entry */
31 char *command; /* hush command of entry */
32 struct bootmenu_data *menu; /* this bootmenu */
33 struct bootmenu_entry *next; /* next menu entry (num+1) */
36 struct bootmenu_data {
37 int delay; /* delay for autoboot */
38 int active; /* active menu entry */
39 int count; /* total count of menu entries */
40 struct bootmenu_entry *first; /* first menu entry */
50 static char *bootmenu_getoption(unsigned short int n)
52 char name[MAX_ENV_SIZE];
57 sprintf(name, "bootmenu_%d", n);
61 static void bootmenu_print_entry(void *data)
63 struct bootmenu_entry *entry = data;
64 int reverse = (entry->menu->active == entry->num);
67 * Move cursor to line where the entry will be drown (entry->num)
68 * First 3 lines contain bootmenu header + 1 empty line
70 printf(ANSI_CURSOR_POSITION, entry->num + 4, 1);
75 puts(ANSI_COLOR_REVERSE);
80 puts(ANSI_COLOR_RESET);
83 static void bootmenu_autoboot_loop(struct bootmenu_data *menu,
84 enum bootmenu_key *key, int *esc)
88 if (menu->delay > 0) {
89 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
90 printf(" Hit any key to stop autoboot: %2d ", menu->delay);
93 while (menu->delay > 0) {
94 for (i = 0; i < 100; ++i) {
124 printf("\b\b\b%2d ", menu->delay);
127 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
128 puts(ANSI_CLEAR_LINE);
130 if (menu->delay == 0)
134 static void bootmenu_loop(struct bootmenu_data *menu,
135 enum bootmenu_key *key, int *esc)
148 /* First char of ANSI escape sequence '\e' */
155 /* Second char of ANSI '[' */
165 /* Third char of ANSI (number '1') - optional */
166 if (*esc == 2 && c == '1') {
174 /* ANSI 'A' - key up was pressed */
177 /* ANSI 'B' - key down was pressed */
180 /* other key was pressed */
187 /* enter key was pressed */
192 static char *bootmenu_choice_entry(void *data)
194 struct bootmenu_data *menu = data;
195 struct bootmenu_entry *iter;
196 enum bootmenu_key key = KEY_NONE;
201 if (menu->delay >= 0) {
202 /* Autoboot was not stopped */
203 bootmenu_autoboot_loop(menu, &key, &esc);
205 /* Some key was pressed, so autoboot was stopped */
206 bootmenu_loop(menu, &key, &esc);
211 if (menu->active > 0)
213 /* no menu key selected, regenerate menu */
216 if (menu->active < menu->count - 1)
218 /* no menu key selected, regenerate menu */
222 for (i = 0; i < menu->active; ++i)
231 debug("bootmenu: this should not happen");
235 static void bootmenu_destroy(struct bootmenu_data *menu)
237 struct bootmenu_entry *iter = menu->first;
238 struct bootmenu_entry *next;
250 static struct bootmenu_data *bootmenu_create(int delay)
252 unsigned short int i = 0;
254 struct bootmenu_data *menu;
255 struct bootmenu_entry *iter = NULL;
260 struct bootmenu_entry *entry;
262 menu = malloc(sizeof(struct bootmenu_data));
270 default_str = env_get("bootmenu_default");
272 menu->active = (int)simple_strtol(default_str, NULL, 10);
274 while ((option = bootmenu_getoption(i))) {
275 sep = strchr(option, '=');
277 printf("Invalid bootmenu entry: %s\n", option);
281 entry = malloc(sizeof(struct bootmenu_entry));
286 entry->title = malloc(len + 1);
291 memcpy(entry->title, option, len);
292 entry->title[len] = 0;
294 len = strlen(sep + 1);
295 entry->command = malloc(len + 1);
296 if (!entry->command) {
301 memcpy(entry->command, sep + 1, len);
302 entry->command[len] = 0;
304 sprintf(entry->key, "%d", i);
318 if (i == MAX_COUNT - 1)
322 /* Add U-Boot console entry at the end */
323 if (i <= MAX_COUNT - 1) {
324 entry = malloc(sizeof(struct bootmenu_entry));
328 entry->title = strdup("U-Boot console");
334 entry->command = strdup("");
335 if (!entry->command) {
341 sprintf(entry->key, "%d", i);
358 if ((menu->active >= menu->count)||(menu->active < 0)) { //ensure active menuitem is inside menu
359 printf("active menuitem (%d) is outside menu (0..%d)\n",menu->active,menu->count-1);
366 bootmenu_destroy(menu);
370 static void menu_display_statusline(struct menu *m)
372 struct bootmenu_entry *entry;
373 struct bootmenu_data *menu;
375 if (menu_default_choice(m, (void *)&entry) < 0)
380 printf(ANSI_CURSOR_POSITION, 1, 1);
381 puts(ANSI_CLEAR_LINE);
382 printf(ANSI_CURSOR_POSITION, 2, 1);
383 puts(" *** U-Boot Boot Menu ***");
384 puts(ANSI_CLEAR_LINE_TO_END);
385 printf(ANSI_CURSOR_POSITION, 3, 1);
386 puts(ANSI_CLEAR_LINE);
388 /* First 3 lines are bootmenu header + 2 empty lines between entries */
389 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
390 puts(ANSI_CLEAR_LINE);
391 printf(ANSI_CURSOR_POSITION, menu->count + 6, 1);
392 puts(" Press UP/DOWN to move, ENTER to select");
393 puts(ANSI_CLEAR_LINE_TO_END);
394 printf(ANSI_CURSOR_POSITION, menu->count + 7, 1);
395 puts(ANSI_CLEAR_LINE);
398 static void bootmenu_show(int delay)
403 char *command = NULL;
405 struct bootmenu_data *bootmenu;
406 struct bootmenu_entry *iter;
409 /* If delay is 0 do not create menu, just run first entry */
411 option = bootmenu_getoption(0);
413 puts("bootmenu option 0 was not found\n");
416 sep = strchr(option, '=');
418 puts("bootmenu option 0 is invalid\n");
421 run_command(sep+1, 0);
425 bootmenu = bootmenu_create(delay);
429 menu = menu_create(NULL, bootmenu->delay, 1, menu_display_statusline,
430 bootmenu_print_entry, bootmenu_choice_entry,
433 bootmenu_destroy(bootmenu);
437 for (iter = bootmenu->first; iter; iter = iter->next) {
438 if (!menu_item_add(menu, iter->key, iter))
442 /* Default menu entry is always first */
443 menu_default_set(menu, "0");
445 puts(ANSI_CURSOR_HIDE);
446 puts(ANSI_CLEAR_CONSOLE);
447 printf(ANSI_CURSOR_POSITION, 1, 1);
451 if (menu_get_choice(menu, &choice)) {
453 title = strdup(iter->title);
454 command = strdup(iter->command);
459 bootmenu_destroy(bootmenu);
462 puts(ANSI_CURSOR_SHOW);
463 puts(ANSI_CLEAR_CONSOLE);
464 printf(ANSI_CURSOR_POSITION, 1, 1);
467 if (title && command) {
468 debug("Starting entry '%s'\n", title);
470 run_command(command, 0);
474 #ifdef CONFIG_POSTBOOTMENU
475 run_command(CONFIG_POSTBOOTMENU, 0);
479 #ifdef CONFIG_AUTOBOOT_MENU_SHOW
480 int menu_show(int bootdelay)
482 bootmenu_show(bootdelay);
483 return -1; /* -1 - abort boot and run monitor code */
487 int do_bootmenu(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
489 char *delay_str = NULL;
492 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
493 delay = CONFIG_BOOTDELAY;
500 delay_str = env_get("bootmenu_delay");
503 delay = (int)simple_strtol(delay_str, NULL, 10);
505 bootmenu_show(delay);
510 bootmenu, 2, 1, do_bootmenu,
511 "ANSI terminal bootmenu",
513 " - show ANSI terminal bootmenu with autoboot delay"